1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
If we study the vibration of a pipe open at both ends. then the following statement is not true.
A
All harmonics of the fundamental frequency will be generated.
B
Pressure change will be maximum at both ends.
C
Open end will be antinode.
D
Odd harmonics of the fundamental frequency will be generated.
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
A wave travelling in the + ve x-direction having displacement along y-direction as 1 m, wavelength 2$$\pi $$ m and frequency of $${1 \over \pi }$$ Hz is represented by
A
y = sin(10$$\pi $$x $$-$$ 20$$\pi $$t)
B
y = sin(2$$\pi $$x + 2$$\pi $$t)
C
y = sin(x $$-$$ 2t)
D
y $$=$$ sin(2$$\pi $$x $$-$$ 2$$\pi $$t)
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
A source of unknown frequency gives 4 beats/s when sounded with a source of known frquency 250 Hz. The second harmonic of the source of unknown frequency gives five beats per second, when sounded with a source of frequency 513 Hz. The unknown frequency is
A
240 Hz
B
260 Hz
C
254 Hz
D
246 Hz
4
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
The equation of a simple harmonic wave is given by

y = 3 sin$${\pi \over 2}$$(50t $$-$$ x),

where x and y are in metres and t is in seconds. The ratio of maximum particle velocity to the wave velocity is
A
2$$\pi $$
B
$${3 \over 2}\pi $$
C
$$3\pi $$
D
$${2 \over 3}\pi $$
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